Answer: licketysplit

AnswerCrossword Clue
LICKETYSPLITAt full speed
LICKETYSPLITLike a house afire
LICKETYSPLITOn the double
LICKETYSPLITVery quickly
LICKETYSPLITReally quickly
LICKETYSPLITWithout delay
LICKETYSPLITSpeed demon's way to go
LICKETYSPLITASAP
LICKETYSPLITImmediately
LICKETYSPLITNow!
LICKETYSPLIT"Now!"
LICKETYSPLITRapidly
LICKETYSPLITPronto